The new technology provides the fastest Internet connection and allows to download a high-definition film in seconds.

It seems like in the nearest future Wi-Fi will surrender to a new technology dubbed Li-Fi, an alternative technology that is promised to reach speeds of 1 Gbps in real-world use — 100 times faster than average Wi-Fi speeds.

The novelty uses light to beam information through the air. Writing about the technology earlier this year, the Telegraph’s Sophie Curtis said: “Light is already used to transmit data across fibre optic networks at high speed. These work by guiding the light along optical fibres using total internal reflection, so that no information is lost along the way.”

“However, transmitting information by beaming light through the air is more difficult, because there is no ‘light tunnel’ to guide the signal to where it needs to go.”

The research, published in the journal Photonics Technology Letter, specifies how the specialised broadcast LEDs and receivers operate with different fields of view and bands that affect the data transmission speeds.

“Optical fibre communication networks can provide terabit aggregate capacities to buildings and offices within modern cities,” the report reads. “Practical wireless systems are orders of magnitude below this capacity. In this letter, we describe an indoor optical bidirectional wireless link with an aggregate capacity over 100 Gb/s. The link operates over ~3 m range at 224 Gb/s (6 x 37.4 Gb/s) and 112 Gb/s (3 x 37.4 Gb/s) with a wide field of view (FOV) of 60° and 36°, respectively. To the best of our knowledge, this is the first demonstration of a wireless link of this type with a [field of view] that offers practical room-scale coverage.”

The novelty is expected tp provide low-cost wireless internet more securely in localised areas, given that light is unable to pass through walls.

“We are doing a few pilot projects within different industries where we can utilise the VLC (visible light communication) technology,” Li-Fi chief executive Deepak Solanki reporters.

“However, transmitting information by beaming light through the air is more difficult, because there is no ‘light tunnel’ to guide the signal to where it needs to go.”

“Currently we have designed a smart lighting solution for an industrial environment where the data communication is done through light. We are also doing a pilot project with a private client where we are setting up a Li-Fi network to access the internet in their office space.”

Harold Haas, one of the pioneers of the technology, has previously noted that in the future every LED lightbulb could potentially be used as an ultra-fast alternative to Wi-Fi.

“We have the infrastructure there,” Haas said in a TED Talk demonstrating Li-Fi. “We can use them for communications.”

“All we need to do is fit a small microchip to every potential illumination device and this would then combine two basic functionalities: illumination and wireless data transmission. In the future we will not only have 14 billion light bulbs, we may have 14 billion Li-Fi’s deployed worldwide for a cleaner, greener and even a brighter future.”

The technology has been trialled by airlines, which want to use it to provide better in-flight connectivity, and intelligence agencies, which are interested in the potential of LiFi for secure wireless data transfers.

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